diff --git a/nnpdf_data/nnpdf_data/commondata/ATLAS_WPWM_13TEV/metadata.yaml b/nnpdf_data/nnpdf_data/commondata/ATLAS_WPWM_13TEV/metadata.yaml
index 7410b6893e..f2b77796a0 100644
--- a/nnpdf_data/nnpdf_data/commondata/ATLAS_WPWM_13TEV/metadata.yaml
+++ b/nnpdf_data/nnpdf_data/commondata/ATLAS_WPWM_13TEV/metadata.yaml
@@ -44,8 +44,8 @@ implemented_observables:
     variables:
       m_W2:
         description: W boson squared mass
-        label: m_W2
-        units: '$GeV^2$'
+        label: '$m_W^2$'
+        units: 'GeV$^2$'
       sqrts:
         description: center of mass energy
         label: '$\sqrt{s}$'
diff --git a/nnpdf_data/nnpdf_data/commondata/ATLAS_Z0_13TEV/metadata.yaml b/nnpdf_data/nnpdf_data/commondata/ATLAS_Z0_13TEV/metadata.yaml
index fe7817d6fb..e5f3d4b91a 100644
--- a/nnpdf_data/nnpdf_data/commondata/ATLAS_Z0_13TEV/metadata.yaml
+++ b/nnpdf_data/nnpdf_data/commondata/ATLAS_Z0_13TEV/metadata.yaml
@@ -42,7 +42,7 @@ implemented_observables:
       m_Z2:
         description: Z boson mass squared
         label: '$m_{Z}^2$'
-        units: '$GeV^2$'
+        units: 'GeV$^2$'
       sqrts:
         description: center of mass energy
         label: '$\sqrt{s}$'